Onidere
is a Japanese manga series written and illustrated by. It was serialized in Shogakukan's manga magazine Weekly Shōnen Sunday from April 2008 to February 2011, with its chapters collected in 11 volumes.
Plot
Tadashi Imamoto, a second-year junior high student, excels at knitting as a devoted handicraft club member. He maintains a secret romantic relationship with Saya, leader of a notorious all-girl gang, who threatens mutual destruction if their affair is discovered. As their relationship develops, the dynamic shifts noticeably toward Tadashi, with Saya becoming increasingly overwhelmed by affection—to the point of fainting and nosebleeds at mere thoughts of his attention.Characters
;Saya Ikushima;Tadashi Imamoto
Onigashira
;Yuna Suzune;Mitsuki Asobiya
;Momo Akitsuka
Student council
;Tomeo Kinoshita;Saki Nijinose
;Shū Yamata
Haō-sō
The Haō-sō is a rival gang seeking to overthrow the Onigashira. Their members wear animal helmets representing Chinese constellations and initially sent Momo to infiltrate and assassinate Saya, though she ultimately defects. Aware of Saya and Tadashi's relationship through Momo, they attempt to control all school gangs by opposing mixed-gender education, possibly due to their own difficulties interacting with the opposite sex. The group eventually disbands after resolving these interpersonal issues.;Amane Tastumi / Tenryū
;Akito Toraya / Ko Ō
;Aoi Kamehiro / Kōkaku